BU31UA3WNVX-TL

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BU31UA3WNVX-TL is a single-output fixed positive Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable 3.1 V output with a maximum current capacity of 300 mA. The device operates within an input voltage range of 1.7 V to 5.5 V and features a typical dropout voltage of 200 mV. Packaged in a compact DFN-4 surface-mount format, it supports an operating temperature range from -40°C to +85°C. This component is classified as Not Recommended for New Designs (NRND).

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed positive output voltage regulated at 3.1 V.
• Supports continuous load currents up to 300 mA.
• Operates with a low input voltage range starting from 1.7 V.
• Integrated thermal shutdown and over-current protection mechanisms.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Powering portable electronic devices requiring stable low-voltage rails.
• Supplying logic ICs in battery-operated systems.
• Voltage regulation in consumer electronics modules.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the current lifecycle status before procurement, as this part is designated as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, noting that stock levels may be limited or discontinued. Ensure the DFN-4 package compatibility matches your PCB footprint requirements. Check for RoHS compliance details in the official datasheet prior to finalizing orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.1 V rail is required with moderate current demands up to 300 mA. Consider the 1.7 V minimum input voltage constraint for battery-powered applications. Evaluate the DFN-4 package size against available board space. Note that newer alternatives may be recommended due to the NRND status, so verify if updated series parts offer better long-term supply stability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This LDO belongs to the BUxxUA3WNVX series from ROHM Semiconductor, designed for low-power applications. It utilizes CMOS technology to achieve efficient power management in small form factors. The series is intended for general-purpose voltage regulation in portable devices where space and power efficiency are critical constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for BU31UA3WNVX variants or other BUxxUA3WNVX series members with different output voltages. Consult ROHM documentation for officially confirmed substitute part numbers due to the NRND status.